cross-ventilation and it was potentially done because of the length of the building and the mass of the building. and many of the units around the corridor with additional light wells and property line windows and light wells created the only type of light and air in the apartments. i happened to live in one of those myself, but by using the argument of property line windows aren't permitted, which under the current code when buildings are built today, that is correct. in those days, those rules didn't exist. so i believe that the examination of how we all of a sudden decide to brush away the quality of life in those units, irrespective of who lives in them, owners, renters, i don't care, it creates a change.